Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '307a834e243e1f8a61d782185ab4bd01b4c396bcaf5898947f0b9026ea482ef7' 
  AND token = 'Ho5iktEp5eOTYk8vGWVGrYJlNMPtU5yeqmnpxXLuJDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}